Ventilating apparatus.



N0. 69l,3l2. Patented Ian. M, I902.

. J. A. HART.

VENTILATING APPARATUS.

(Application filed Sept. 24, 1901.)

2 Sheets-Sheet I.

(No Model.)

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Patented Ian. I4, 1902. J. A. HART. VENTILATING APPARATUS.

2 Sheets-Sheet 2.

(No Model.)

. 0 w r N Joy/v 191 e To ma fiTroR XS UNITED, STATES PATENT OFFICE.

.IOHN ALSTON HART, OF BLACKBURN, ENGLAND.

VENTILATING APPARATUS.

SPECIFIGATIQN forming part of Letters Patent No. 691,312, dated January14, 1902.

. Application filed September 24, 1901. Serial No. 76,375. (No model.)

To all whom, it may concern:

Be it known that I, JOHN ALSTON HART, engineer, a subject of the King ofGreat Britain and Ireland, residing at Commercial Mills, Novas,Blackburn, in the county of Lancaster, England, have invented certainnew and useful Improvements in Apparatus for Use in Ventilating withConditioned or Filtered, Cooled or Warmed, and Moistened Air; and I dohereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to whichit appertains to make and use the same.

The object of my invention is to provide means by which ventilation withair which is conditioned by being filtered and cooled or warmed andmoistened, as required, before being admitted to the room or place to besupplied with such 'air can be edected with a minimum of interferencewith and disturbance of the building and room and lighting-space and atsmall cost.

I will describe my invention with reference to the accompanyingdrawings, premising that I do not limit myself to the precise detailsshown in the said drawings, in which- Figure 1 is a cross-sectionalelevation; and Fig. 2 is a sectional view at right angles to thesection, Fig. 1.

According to my invention I provide a passage or chamber A, in which issituated a coil or coils B or the like, through which the cooling orheating medium can be passed, and I also provide a passage or chamber orpassages or chambers O, in which the moistening and filtering of the airis efiected.

These passages or chambers A and 0 communicate with each other,preferably by an opening I) at the lower part, provided with an upwarddeflector 5 so that the air which enters the attemperating passage orchamber A by the inlet a after passing through the said chamber A entersand passes through the passage or chamber or passages or chambers G andis moistened and filtered therein, as hereinafter explained, and passestherefrom into a pipe or duct D, leading to the apparatus, by which theair is caused to flow into and is distributed in the room or space to beventilated, the last-named apparatus being preferably made in accordancewith the speciiication of United States Patent No. 611,480, datedSeptember 27, 1898, granted to me. The passage or chamber 0 (or eachsuch passage or chamber) contains a permeable material c, which presentsa large surface to the air. This material may be, for example, fabric ofcoir, or cocoanut fiber, or the like. Over this fabric water isdistribgted, so that the air from the attemperating passage or chamber Ain passing through this fabric takes up the requisite amount of moisturebefore it passes to the apparatus by which itis distributed in the roomor space to be ventilated in addition to the said air being filtered bythus passing through the said fabric. The said fabric and the rest ofthe air-moistening device may be arranged as illustrated in thedrawingsthat is to say, in the passage or chamber C (or each suchpassage or chamber) at top and bottom of which are rollers E, carriedbyshafts mounted in bearings. These rollers are preferably made of zinctubes, as they should be light and not liable to become distorted inuse, and over these is passed an endless sheet or band of the coir orcocoanut fiber or the like, as shown at c. \Vater is supplied to thissheet or band, which can be effected by any suitable means-for example,by a pipe supplying water to a trough 0 near the upper roller. A pieceof fabric 0. which dips into this trough and is in contact with the band0, so that water is conveyed thereto, the said fabric also acting as aguard to prevent air passing over the top of the sheet or hand withoutpassing through it. In each passage or chamber'O the water should besupplied to that side of the sheet or band 0 which is opposite to thatat which the air enters the passage or chamber 0, the communication withthe said passage or chamber C for air from the air-attemperating passageor chamberA being preferably at the lower part, as shown, so that theair passes upward at one side of the sheet or band c,while the waterpasses downward at the other side of the said sheet or band, thustending to cause the said sheet or band to travel or assist it intraveling with its rollers, to which or to one of which slow positivemotion can also be applied, if desiredfor example, by a wheel driven bythe water and geared to the axis of the top roller or by a driving-bandand gearing, as shown in the drawings. A trough F beneath the said sheetor band 0 receives the surplus water,and the sheet or band is washed asit passes through it. The said trough F is provided with an outlet bywhich the water can run off when it reaches a level beyond thatnecessary to wash the band. Doors are arranged at G, so as to allow ofready access to the sheet or band a for cleaning purposes. Theair-attemperatingand air moistening and filtering passages or chambers Aand G can conveniently be arranged in pairs, as shown in Fig. 2, at eachside of the passage or chamher D from which leads the pipe or duct D, bywhich the conditioned air passes to the distributing apparatus, the endsof the passages or chambers which are at each side of this passage orchamber D being closed at the parts extending from the back to or alittle beyond the forward edge of the sheet or band 0, the parts of thesaid ends which are beyond this being open, so that the air passesthrough the two lines of the sheet or band.

The parts 'of the apparatus are arranged as may be most convenient forthe situation where the apparatus is employed. The arrangement shown isvery suitable for use in textile-spinning mills, for example, the,airattemperatin g passage or chamber or passages or chambers A being inthe wall (or it may be inward of the wall) beneath a window or windows,and the air moistening and filtering passages or chambers Obeingarranged in front of these, the passage or chamber D into which theair passes from these to the pipe or duet D and thence to thedistributing apparatus, being between the two air moistening andfiltering passages or chambers A, the saidpipe or duct D, by which airpasses to the distributer,being beneath the floorof the room in whichthe air-conditioning apparatus is situated, the distributing apparatusdepending from the ceiling of the room below, which is the room to besupplied With the conditioned air.

The passages or chambers for attemperating and moisteningand filteringthe air are preferably of small width and deep and long, as shown, sothat comparatively thin sheets of air of considerable width passtherethrough.

I may provide in combination with the attemperating-chambers A means foradmitting steam thereto for moistening the air in addition to thateffected by the water in the moistening and filtering passages orchambers aforesaid.

I claim as my invention- Apparatus for ventilating with conditioned andmoistened air, said apparatus comprising a chamber, upper and lowerrollers car rying an endless band adapted to travel Vertically in agiven direction, a trough for the lower roller, a trough above the upperroller adapted to cause the band to be wet on that half which istraveling downwardly, an opening to the outside, heating-coils betweenthe opening and the chamber, deflectors adapted to send the air upwardagainst the half of the band traveling upwardly to assist in itsmovement and. an opening from the interior of the chamber to theinterior of the building through which the air is drawn, thereby forcinga blast from the deflectors against the band, substantially asdescribed. 7

In testimony whereof I affix my signature in presence of two witnesses.

JOHN ALSTON HART.

Witnesses:

GEORGE H. LEWIs, JOHN BRADLEY.

